JavaWeb_(Spring框架)整合Mybatis加入事务操作数据库
整合Mybatis
a)导包：
i.Spring：基本包、aop、aspects、jdbc、tx、test；
ii.Mybatis：mybatis-3.4.6
iii.整合包：mybatis-spring-1.3.2
iv.三方包：
1.aopalliance
2.aspectj.weaver
3.c3p0-0.9.5.2
4.mchange-commons-java-0.2.11
5.mysql-connector-java-5.1.46-bin
6.ojdbc7
b)创建项目结构(package)：bean、service、mapper、test；
c)创建配置文件：sqlMapperConfig、applicaitonContext
2、创建测试用例：使用Mapper扫描开发，转账；
3、在service中加入事务：利用Spring-aop事务解决转账异常问题；
未添加事务前
package com.Gary.bean;
public class Account {
private Integer id;
private String name;
private Double money;
//转账金额
private Double tranferMoney;
public Double getTranferMoney() {
return tranferMoney;
}
public void setTranferMoney(Double tranferMoney) {
this.tranferMoney = tranferMoney;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Double getMoney() {
return money;
}
public void setMoney(Double money) {
this.money = money;
}
}
Account.java
package com.Gary.mapper; import com.Gary.bean.Account; //账户mapper接口
public interface AccountMapper { //操作数据库扣款和加款 //扣款
void subMoney(Account pay); //加款
void addMoney(Account collect); }
AccountMapper.java
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <mapper namespace="com.Gary.mapper.AccountMapper"> <update id="subMoney" parameterType="Account">
update account set money = money - #{tranferMoney} where id = #{id}
</update> <update id="addMoney" parameterType="Account">
update account set money = money + #{tranferMoney} where id = #{id}
</update> </mapper>
AccountMapper.xml
package com.Gary.service;
public interface AccountService {
//转账方法
void tranferAccount();
}
AccountService.java
package com.Gary.service; import javax.annotation.Resource; import com.Gary.bean.Account;
import com.Gary.mapper.AccountMapper; public class AccountServiceImpl implements AccountService{ @Resource(type = AccountMapper.class)
private AccountMapper mapper; @Override
public void tranferAccount() { Double tranferMoney = 100d; Account pay = new Account();
pay.setId(1);
pay.setTranferMoney(tranferMoney);
//先扣款
mapper.subMoney(pay); Account collect = new Account();
collect.setId(2);
collect.setTranferMoney(tranferMoney); //加款
mapper.addMoney(collect); } }
AccountServiceImpl.java
package com.Gary.test; import javax.annotation.Resource; import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner; import com.Gary.service.AccountService; @RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:applicationContext.xml")
public class MapperTest { @Resource(name = "accountService")
private AccountService as; @Test
public void Test1() {
as.tranferAccount(); } }
MapperTest.java
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd"> <!-- 读取配置文件 -->
<context:property-placeholder location="db.properties"/> <!-- 配置 dataSource -->
<bean name="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${jdbc.driverClass}"/>
<property name="jdbcUrl" value="${jdbc.jdbcUrl}"/>
<property name="user" value="${jdbc.user}"/>
<property name="password" value="${jdbc.password}"/>
</bean> <!-- mybatis -->
<bean name="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="configLocation" value="classpath:sqlMapConfig.xml"/>
</bean> <!-- mapper工厂 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.Gary.mapper"/>
</bean> <!-- service -->
<bean name="accountService" class="com.Gary.service.AccountServiceImpl"> </bean> </beans>
applicationContext.xml
jdbc.driverClass=com.mysql.jdbc.Driver
jdbc.jdbcUrl=jdbc:mysql://localhost:3306/ssm_spring
jdbc.user=root
jdbc.password=123456
db.properties
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd"> <configuration>
<typeAliases>
<package name="com.Gary.bean"/>
</typeAliases>
</configuration>
sqlMapConfig
Spring中加入事务
a) 配置事务核心管理器: DataSourceTransactionManager；
<!-- 需要事务核心管理器 -->
<bean name="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>
b) 配置事务通知 tx:Advice；
<!-- 配置事务通知 -->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="update*" isolation="DEFAULT" propagation="REQUIRED" read-only="false"/>
</tx:attributes>
</tx:advice>
c) 配置aop；
<!-- 配置aop -->
<aop:config>
<aop:pointcut expression="execution(* com.Gary.service.*ServiceImpl.*(..))" id="txPc"/>
<aop:advisor advice-ref="txAdvice" pointcut-ref="txPc"/>
</aop:config>
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd"> <!-- 读取配置文件 -->
<context:property-placeholder location="db.properties"/> <!-- 配置 dataSource -->
<bean name="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${jdbc.driverClass}"/>
<property name="jdbcUrl" value="${jdbc.jdbcUrl}"/>
<property name="user" value="${jdbc.user}"/>
<property name="password" value="${jdbc.password}"/>
</bean> <!-- mybatis -->
<bean name="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="configLocation" value="classpath:sqlMapConfig.xml"/>
</bean> <!-- mapper工厂 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.Gary.mapper"/>
</bean> <!-- service -->
<bean name="accountService" class="com.Gary.service.AccountServiceImpl">
</bean> <!-- 需要事务核心管理器 -->
<bean name="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean> <!-- 配置事务通知 -->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="update*" isolation="DEFAULT" propagation="REQUIRED" read-only="false"/>
</tx:attributes>
</tx:advice> <!-- 配置aop -->
<aop:config>
<aop:pointcut expression="execution(* com.Gary.service.*ServiceImpl.*(..))" id="txPc"/>
<aop:advisor advice-ref="txAdvice" pointcut-ref="txPc"/>
</aop:config> </beans>
applicationContext.xml
package com.Gary.bean;
public class Account {
private Integer id;
private String name;
private Double money;
//转账金额
private Double tranferMoney;
public Double getTranferMoney() {
return tranferMoney;
}
public void setTranferMoney(Double tranferMoney) {
this.tranferMoney = tranferMoney;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Double getMoney() {
return money;
}
public void setMoney(Double money) {
this.money = money;
}
}
Account.java
package com.Gary.mapper; import com.Gary.bean.Account; //账户mapper接口
public interface AccountMapper { //操作数据库扣款和加款 //扣款
void subMoney(Account pay); //加款
void addMoney(Account collect); }
AccountMapper.java
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <mapper namespace="com.Gary.mapper.AccountMapper"> <update id="subMoney" parameterType="Account">
update account set money = money - #{tranferMoney} where id = #{id}
</update> <update id="addMoney" parameterType="Account">
update account set money = money + #{tranferMoney} where id = #{id}
</update> </mapper>
AccountMapper.xml
package com.Gary.service;
public interface AccountService {
//转账方法
void updateTranferAccount();
}
AccountService.java
package com.Gary.service; import javax.annotation.Resource; import com.Gary.bean.Account;
import com.Gary.mapper.AccountMapper; public class AccountServiceImpl implements AccountService{ @Resource(type = AccountMapper.class)
private AccountMapper mapper; @Override
public void updateTranferAccount() { Double tranferMoney = 100d; Account pay = new Account();
pay.setId(1);
pay.setTranferMoney(tranferMoney);
//先扣款
mapper.subMoney(pay); //添加异常
int i=1/0; Account collect = new Account();
collect.setId(2);
collect.setTranferMoney(tranferMoney); //加款
mapper.addMoney(collect); } }
AccountServiceImpl.java
package com.Gary.test; import javax.annotation.Resource; import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner; import com.Gary.service.AccountService; @RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:applicationContext.xml")
public class MapperTest { @Resource(name = "accountService")
private AccountService as; @Test
public void Test1() {
as.updateTranferAccount(); } }
MapperTest.java
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd"> <!-- 读取配置文件 -->
<context:property-placeholder location="db.properties"/> <!-- 配置 dataSource -->
<bean name="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${jdbc.driverClass}"/>
<property name="jdbcUrl" value="${jdbc.jdbcUrl}"/>
<property name="user" value="${jdbc.user}"/>
<property name="password" value="${jdbc.password}"/>
</bean> <!-- mybatis -->
<bean name="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="configLocation" value="classpath:sqlMapConfig.xml"/>
</bean> <!-- mapper工厂 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.Gary.mapper"/>
</bean> <!-- service -->
<bean name="accountService" class="com.Gary.service.AccountServiceImpl">
</bean> <!-- 需要事务核心管理器 -->
<bean name="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean> <!-- 配置事务通知 -->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="update*" isolation="DEFAULT" propagation="REQUIRED" read-only="false"/>
</tx:attributes>
</tx:advice> <!-- 配置aop -->
<aop:config>
<aop:pointcut expression="execution(* com.Gary.service.*ServiceImpl.*(..))" id="txPc"/>
<aop:advisor advice-ref="txAdvice" pointcut-ref="txPc"/>
</aop:config> </beans>
applicationContext.xml
jdbc.driverClass=com.mysql.jdbc.Driver
jdbc.jdbcUrl=jdbc:mysql://localhost:3306/ssm_spring
jdbc.user=root
jdbc.password=123456
db.properties
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd"> <configuration>
<typeAliases>
<package name="com.Gary.bean"/>
</typeAliases>
</configuration>
sqlMapConfig.xml
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